Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production
We quantified benthic diatom diversity in streams in the Miellajokka catchment, about 200 km north of the Arctic circle in Sweden. Beta diversity among sites was related to local-scale environmental heterogeneity (occurring on the order of 1 km or less), and its magnitude was equal (Sørensen Index =...
Published in: | Arctic Science |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2021
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-190014 https://doi.org/10.1139/as-2020-0060 |
id |
ftumeauniv:oai:DiVA.org:umu-190014 |
---|---|
record_format |
openpolar |
spelling |
ftumeauniv:oai:DiVA.org:umu-190014 2023-10-09T21:47:34+02:00 Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production Riley, Breena Seekell, David A. 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-190014 https://doi.org/10.1139/as-2020-0060 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Department of Biology, Tarleton State University, TX, Stephenville, United States , 2021, 7:4, s. 762-780 Arctic Science, 2021, 7:4, s. 762-780 orcid:0000-0001-6700-6149 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-190014 doi:10.1139/as-2020-0060 ISI:000730161000004 Scopus 2-s2.0-85119695807 info:eu-repo/semantics/openAccess Arctic rivers Beta diversity Diatoms Environmental filtering Gross primary production Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2021 ftumeauniv https://doi.org/10.1139/as-2020-0060 2023-09-22T14:01:35Z We quantified benthic diatom diversity in streams in the Miellajokka catchment, about 200 km north of the Arctic circle in Sweden. Beta diversity among sites was related to local-scale environmental heterogeneity (occurring on the order of 1 km or less), and its magnitude was equal (Sørensen Index = 0.62) to levels previously reported for rivers on regional environmental gradients across hundreds of kilometres of Arctic Fennoscandia. Species turnover was the dominant (77%) component of beta diversity in the Miellajokka catchment. Small, stress-tolerant taxa dominated the assemblages, and there were no clear patterns of functional class among sites. Site ordinates from non-metric dimensional scaling were most strongly correlated with flood frequency (r = 0.83) and water temperature (r = 0.89), which was higher in harsh tundra sites than below treeline. Additionally, site ordinates were correlated (r = 0.83) with ecosystem-scale gross primary production — indicative of a link between diatom diversity and ecosystem function. Our results advance understanding of patterns diatom diversity in Arctic streams by quantifying local-scale variation that is understudied in this region, and by identifying the consequences of this local-scale diversity for an ecosystem-scale process. Article in Journal/Newspaper Arctic Arctic Fennoscandia Tundra Umeå University: Publications (DiVA) Arctic Arctic Science 7 4 762 780 |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Arctic rivers Beta diversity Diatoms Environmental filtering Gross primary production Ecology Ekologi |
spellingShingle |
Arctic rivers Beta diversity Diatoms Environmental filtering Gross primary production Ecology Ekologi Riley, Breena Seekell, David A. Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production |
topic_facet |
Arctic rivers Beta diversity Diatoms Environmental filtering Gross primary production Ecology Ekologi |
description |
We quantified benthic diatom diversity in streams in the Miellajokka catchment, about 200 km north of the Arctic circle in Sweden. Beta diversity among sites was related to local-scale environmental heterogeneity (occurring on the order of 1 km or less), and its magnitude was equal (Sørensen Index = 0.62) to levels previously reported for rivers on regional environmental gradients across hundreds of kilometres of Arctic Fennoscandia. Species turnover was the dominant (77%) component of beta diversity in the Miellajokka catchment. Small, stress-tolerant taxa dominated the assemblages, and there were no clear patterns of functional class among sites. Site ordinates from non-metric dimensional scaling were most strongly correlated with flood frequency (r = 0.83) and water temperature (r = 0.89), which was higher in harsh tundra sites than below treeline. Additionally, site ordinates were correlated (r = 0.83) with ecosystem-scale gross primary production — indicative of a link between diatom diversity and ecosystem function. Our results advance understanding of patterns diatom diversity in Arctic streams by quantifying local-scale variation that is understudied in this region, and by identifying the consequences of this local-scale diversity for an ecosystem-scale process. |
format |
Article in Journal/Newspaper |
author |
Riley, Breena Seekell, David A. |
author_facet |
Riley, Breena Seekell, David A. |
author_sort |
Riley, Breena |
title |
Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production |
title_short |
Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production |
title_full |
Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production |
title_fullStr |
Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production |
title_full_unstemmed |
Stream diatom assemblages in an arctic catchment : Diversity and relationship to ecosystem-scale primary production |
title_sort |
stream diatom assemblages in an arctic catchment : diversity and relationship to ecosystem-scale primary production |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-190014 https://doi.org/10.1139/as-2020-0060 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Fennoscandia Tundra |
genre_facet |
Arctic Arctic Fennoscandia Tundra |
op_relation |
, 2021, 7:4, s. 762-780 Arctic Science, 2021, 7:4, s. 762-780 orcid:0000-0001-6700-6149 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-190014 doi:10.1139/as-2020-0060 ISI:000730161000004 Scopus 2-s2.0-85119695807 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1139/as-2020-0060 |
container_title |
Arctic Science |
container_volume |
7 |
container_issue |
4 |
container_start_page |
762 |
op_container_end_page |
780 |
_version_ |
1779310658517467136 |